RF Technology Eclipse Series Manual de usuario descargar pdf (Pagina 4)

RF Technology PA150

Page 4

2 CIRCUIT DESCRIPTION

1.4 RF Level Detector

The RF Detector threshold for the RFO LED on the amplifier front panel is set by

RV1. This is normally set at half the rated output power.

PA150 Amplifier I/O Connections

25 Pin Connector

Function/Signal Pins Specification

DC Power +12Vdc

- 0Vdc

1,2,14,15

12,13,24,25

+11.4 to 16Vdc

ALC Output 8 Approx 7Vdc decreasing with

increasing power or temperature

RF Input

BNC Connector

25 Watts max

RF Output

N Connector

120 Watts Max

2 Circuit Description

The following descriptions should be read as an aid to understanding the block and

schematic diagrams at the rear of this manual.

2.1 Amplifiers

The RF power amplification is provided by one or two transistors, Q4 and Q5.

The standard power version uses one transistor (Q4) and the high power version

uses two. Each transistor is rated at 75 watts output. The input and output

impedances of the transistors are matched to 50O by microstrip matching

networks.

WARNING

Ensure that the output power setting complies with the equipment’s licence

requirements. Failure to do so may result in penalties being imposed by the

licensing authority.

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RF Technology Eclipse Series Manual de usuario Pagina 4